P-J,
I brewed last weekend and everything turned out awesome. Thanks for all the help. I do have a question though. Just for giggles I hit the E-stop and nothing happened. The wiring is pretty straight forward so I don't think I screwed it up. Is there something I should be looking for?

Again, the brew day went exceptionally well.

I think that you either did not have GFCI protection in place or it was not wired correctly to function properly.

Great thread, de3isit. P-J is a rock star, no? I'm not far from you in Encinitas and would love to check out your system some time. I built my own version and tried it out this weekend. I had issues with my gas burners. Still on Hi-pressure LP as I'm not ready to go all auto just yet. Where did you get the power switches for your pumps? I've begun the control box and haven't found appropriate switches yet. I like the colors and lights to differentiate. The box I bought is 4" deep. Will that be able to accommodate the PIDs and switches? Brew more, tinker less....Thanks for the help.

so do your lights come on when the burners cut on? switch cuts light on when it fires up gas valve? Also, you push the button for pumps causing pump and light to come on? Please excuse my ignorance! I am finally automating my single tier and I'm not very good at reading wiring diagrams. Thanks for any input!

so do your lights come on when the burners cut on? switch cuts light on when it fires up gas valve? Also, you push the button for pumps causing pump and light to come on? Please excuse my ignorance! I am finally automating my single tier and I'm not very good at reading wiring diagrams. Thanks for any input!

When the burners are on the lights are on. Any light that comes on means power is being delivered to it. P-J's schematic was invaluable in this project. I couldn't be happier in the results. Now I need to upgrade my kettles. Soo tire of boil overs!